Eway Replacement Bands with Secure Anti-lost Watchband-style Closure for Fitbit FLFX Only /No tracker/Wireless Activity Bracelet Sport Wristband DOUBLE FIXED--Fitbit Flex wristband with a secure anti-lost watchband-style closure keeps Fitbit on your wrist. SIZE CHART--One size fits most wrists size. MATERIAL--Made from durable and waterproof materials that are even better constructed than the original. PERFECT DESIGN--Our Fitbit Flex Color Bands feature a display window cutout that reveals the device LED lights. PACKAGE--Fitbit device not included. Fitbit Flex band only.